Numerical processing method for deformation in pipeline

Abstract

The invention discloses a numerical processing method for deformation in a pipeline, and belongs to the field of pipeline deformation detection engineering. The problem that the pipeline deformation and pipeline three-dimensional model reconstruction is analyzed according to the detection data is solved. According to the three-dimensional detection data of the deformation in the pipeline, a plurality of discrete data point columns of a plurality of cross section perpendicular to the axis of the pipeline is established, and an additional point is arranged at the end of the discrete data point column, so that the processed discrete data point columns can form a closed curve. A cubic spline function of each section is obtained according to the processed discrete data point columns of each section and solved to obtain a one-dimensional closed curve fitting of the section of the pipeline and the ovality of the section of the pipeline. The discrete data point column sets of each section forma pipeline three-dimensional point cloud data set, and a three-dimensional model of the pipeline is established. The numerical value processing method can be used for establishing a three-dimensionalmodel of a pipeline.

Description

technical field [0001] The invention belongs to the field of pipeline deformation detection engineering, and in particular relates to a numerical processing method for comprehensively analyzing deformation in a pipeline by using data of multiple detection points through a numerical analysis method. Background technique [0002] Pipeline deformation detection and comprehensive evaluation technology is an important supporting technology in the field of oil and gas transportation. [0003] As a long-distance transportation facility for natural gas, oil and other media, pipelines are laid in various environments such as land and sea around the world. Most of the pipelines are buried pipelines. Due to earthquakes, stratum movement, crustal changes, heat transfer deformation, third-party construction damage, etc., the pipelines are often deformed to varying degrees, such as pipeline sag, elliptical deformation, bending and sinking. These deformations will pose a safety hazard, an...

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Problems solved by technology

[0005] In view of the above problems, the present invention provides a numerical processing method for internal deformation of the pipeline, which solves the problems of analyzing the deformation of the pipeline and reconstructing the three-dimensional model of the pipeline according to the detection data

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